Journal
JOURNAL OF SPORTS SCIENCES
Volume 33, Issue 14, Pages 1447-1453Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02640414.2014.990493
Keywords
kinetic chain; passive range of motion; throwing; shoulder; injury prevention; lumbopelvic-hip complex
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Lower to upper extremity sequencing of energy and force is linked by virtue of the scapula. It was the purpose of this study to examine the relationship between passive hip rotational range of motion and scapular kinematics during baseball pitching. Nineteen youth baseball players (11.3 +/- 0.6years; 151.8 +/- 8.8cm; 45.9 +/- 10.9kg) with no history of injury participated. Bilateral hip passive rotational range of motion was measured pre and post pitching a simulated game. Scapular kinematics at the position of shoulder maximum external rotation during the pitching cycle were recorded in the first and last innings of the simulated game. Post simulated game, stance leg hip passive internal rotation revealed significant correlations (r=-0.57, P=0.01) with scapula anterior/posterior tilt at the pitching event of maximum humeral external rotation. The current study reveals that pitching a simulated game results in alterations throughout the kinetic chain. Specifically, this study strengthens the notion that lumbopelvic-hip complex parameters play a significant role in shoulder motion. With this link identified, it is suggested that clinical focus be directed musculature about the lumbopelvic-hip complex as well as muscles that work to stabilise the scapula during dynamic movement.
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